Simplify simple line walking and benchmark inline flow

Author: chenglou

benchmarks/chrome.json

@@ -3,73 +3,95 @@
   "results": [
     {
       "label": "Our library: prepare()",
-      "ms": 20.149999991059303,
+      "ms": 19.599999994039536,
       "desc": "One cold 500-text measurement batch"
     },
     {
       "label": "Our library: layout()",
-      "ms": 0.1575,
+      "ms": 0.1380000001192093,
       "desc": "Normalized hot-path throughput per 500-text batch"
     },
     {
       "label": "DOM batch",
-      "ms": 4.299999997019768,
+      "ms": 4.149999976158142,
       "desc": "Single 400→300px batch resize: write all, then read all"
     },
     {
       "label": "DOM interleaved",
-      "ms": 42.6000000089407,
+      "ms": 42.849999994039536,
       "desc": "Single 400→300px batch resize: write + read per div"
     }
   ],
   "richResults": [
     {
       "label": "Our library: layoutWithLines()",
-      "ms": 0.05750000029802323,
+      "ms": 0.053750000149011615,
       "desc": "60-text shared-corpus batch across widths 180/220/260px; materializes text lines"
     },
     {
       "label": "Our library: walkLineRanges()",
-      "ms": 0.027500000223517417,
+      "ms": 0.027499999105930328,
       "desc": "60-text shared-corpus batch across widths 180/220/260px; geometry only, no line text strings"
     },
     {
       "label": "Our library: layoutNextLine()",
-      "ms": 0.04750000014901161,
+      "ms": 0.04749999940395355,
       "desc": "60-text shared-corpus batch across widths 180/220/260px; streaming line-by-line layout"
     }
   ],
+  "inlineFlowResults": [
+    {
+      "label": "Our library: measureInlineFlowGeometry()",
+      "ms": 0.011250000447034836,
+      "desc": "36 mixed-inline shared-corpus texts across widths 180/220/260px; aggregate geometry only"
+    },
+    {
+      "label": "Our library: walkInlineFlowLineRanges()",
+      "ms": 0.019999999552965164,
+      "desc": "36 mixed-inline shared-corpus texts across widths 180/220/260px; per-line geometry with fragment ranges, no text strings"
+    },
+    {
+      "label": "Our library: walkInlineFlowLines()",
+      "ms": 0.05500000044703483,
+      "desc": "36 mixed-inline shared-corpus texts across widths 180/220/260px; per-line materialization through the batch walker"
+    },
+    {
+      "label": "Our library: layoutNextInlineFlowLine()",
+      "ms": 0.05,
+      "desc": "36 mixed-inline shared-corpus texts across widths 180/220/260px; streaming per-line materialization"
+    }
+  ],
   "richPreWrapResults": [
     {
       "label": "Our library: layoutWithLines()",
-      "ms": 0.39499999955296516,
+      "ms": 0.4024999991059304,
       "desc": "12 generated pre-wrap texts with 320 hard-break chunks across widths 220/260/320px; materializes text lines"
     },
     {
       "label": "Our library: walkLineRanges()",
-      "ms": 0.19750000014901162,
+      "ms": 0.24000000059604645,
       "desc": "12 generated pre-wrap texts with 320 hard-break chunks across widths 220/260/320px; geometry only, no line text strings"
     },
     {
       "label": "Our library: layoutNextLine()",
-      "ms": 0.975,
+      "ms": 1.0099999994039535,
       "desc": "12 generated pre-wrap texts with 320 hard-break chunks across widths 220/260/320px; streaming line-by-line layout"
     }
   ],
   "richLongResults": [
     {
       "label": "Our library: layoutWithLines()",
-      "ms": 8.486250000074506,
+      "ms": 8.26875,
       "desc": "8 Arabic long-form texts across widths 240/300/360px; materializes text lines"
     },
     {
       "label": "Our library: walkLineRanges()",
-      "ms": 5.151249999925494,
+      "ms": 4.683750000596046,
       "desc": "8 Arabic long-form texts across widths 240/300/360px; geometry only, no line text strings"
     },
     {
       "label": "Our library: layoutNextLine()",
-      "ms": 5.428749999776482,
+      "ms": 5.941250000149012,
       "desc": "8 Arabic long-form texts across widths 240/300/360px; streaming line-by-line layout"
     }
   ],
@@ -84,9 +106,9 @@
       "breakableSegments": 0,
       "width": 300,
       "lineCount": 193,
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-      "measureMs": 4.5999999940395355,
-      "prepareMs": 6.799999982118607,
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+      "measureMs": 5.400000035762787,
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       "layoutMs": 0.026500000059604643
     },
     {
@@ -99,10 +121,10 @@
       "breakableSegments": 1,
       "width": 300,
       "lineCount": 380,
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-      "measureMs": 8.5,
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-      "layoutMs": 0.051000000089406965
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     },
     {
       "id": "ko-unsu-joh-eun-nal",
@@ -114,10 +136,10 @@
       "breakableSegments": 0,
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     {
       "id": "zh-zhufu",
@@ -129,10 +151,10 @@
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+      "layoutMs": 0.0775
     },
     {
       "id": "zh-guxiang",
@@ -144,9 +166,9 @@
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-      "analysisMs": 4,
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@@ -159,10 +181,10 @@
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       "id": "my-cunning-heron-teacher",
@@ -175,9 +197,9 @@
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+      "layoutMs": 0.00699999988079071
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     {
       "id": "my-bad-deeds-return-to-you-teacher",
@@ -189,10 +211,10 @@
       "breakableSegments": 274,
       "width": 300,
       "lineCount": 54,
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       "id": "ur-chughd",
@@ -204,10 +226,10 @@
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     {
       "id": "km-prachum-reuang-preng-khmer-volume-7-stories-1-10",
@@ -219,10 +241,10 @@
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       "id": "hi-eidgah",
@@ -234,10 +256,10 @@
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       "id": "synthetic-long-breakable-runs",
@@ -249,10 +271,10 @@
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@@ -264,11 +286,11 @@
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-  "requestId": "1775293362360-623cm0f8o0o"
+  "requestId": "1775315117196-76v7jdo45na"
 }